It's the same situation as any other individual. To be general it all depends on 당신 if it will be hard 또는 not, and also depends on the situation your in in life.
If 당신 are really picky, which basically means that 당신 have to 날짜 another goth, it could be a bit difficult. Simply because the 사무용 겉옷, 전반적인 human population is not goth. But still, I guess that they are enough goths around to date...
On the other hand, if 당신 want to 날짜 a non-goth, it could be even 더 많이 difficult, because not every non-goth would accept your "gothiness"...
To your 초 point: no, 당신 do not need to have a romantic partner to be a "proper goth" 또는 just a "proper human being".
P.S: "True love" is a vague term. I'd like to think that is exists, but I tend not to believe in it.
maybe... Personally a had a situation when a boy who I liked told me that I am frightening. But I think that someone who couldn't accept my style couldn't be a really good partner for me. But I belive that if someone (even if she/he is a goth 또는 not) searches really hard she/he will find the True Love. :)